Exodus 9:7
And Pharaoh sent, and, behold, there was not one of the cattle of the Israelites dead. And the heart of Pharaoh was hardened, and he did not let the people go.
Cross-references
Exodus 9:12 shows the shift: now the Lord hardens Pharaoh's heart, contrasting with Pharaoh's own hardening here.
Exodus 7:14 introduces the theme of a hardened heart early in the plagues, setting the stage for Pharaoh's stubbornness here.
Exodus 8:32 records another instance of Pharaoh hardening his heart after the flies — showing this as a recurring pattern.
Job 9:4 declares that no one who hardens against God succeeds — directly applying to Pharaoh's futile resistance.
Proverbs 29:1 describes the fate of the stiff-necked — Pharaoh's repeated reproofs lead to sudden destruction.
Daniel 5:20 parallels Pharaoh: Nebuchadnezzar's hardened spirit led to his downfall — another example of pride before judgment.
Romans 9:18 uses this hardening as a prime example of God's sovereign will — He hardens whom He desires.
Isaiah 48:4 uses similar language of obstinacy for Israel — hardness of heart is a human problem, not unique to Pharaoh.